An Easter egg of a Homestar Runner cartoon is a feature that is hidden in some way. Often, it is only accessible by clicking on a hidden button, a keypress or by waiting a while after the toon is seemingly over.

Most of the recent Homestar Runner Flash animations feature Easter eggs. These are most prominent in Strong Bad Emails, but are also placed in other cartoons on the site. Most are activated by clicking a specific area of the animation.

Occasionally, Easter eggs are hidden in a way that cannot be revealed directly, and can only be seen if the Flash file is opened in a decompiler. At Georgia Tech, Matt Chapman explained that these were added because the normal Easter eggs were getting too easy to find.

At the end of the toon, press R on the keyboard and Homestar Runner will say something.

HOMESTAR RUNNER: I hate that freakin' robot.

Press F after the previous Easter egg to hear a disclaimer from Fluffy Puff Marshmallows.

{The yellow screen from earlier is seen with the Fluffy Puff Marshmallows logo, a bag of marshmallows, and a jar of mayo.}

VOICEOVER: Fluffy Puff Marshmallows and Marshmallow Mayonnaise. Each sold separately. Comes with everything you see here. Batteries not included. Kids, don't eat nails. {pause} Is that it? Am I done? Can I go? Anybod—Anybody want to get something to eat?

There is a "big head mode", similar to that found in many video games, especially first-person shooters and sports games. To toggle between "big head" and normal press the h key on the "Choose it out" screen.

There is a "fat walker" mode. To toggle between a fat walker and a normal one press the f key on the "Choose it out" screen.

These tricks are case-sensitive and must be typed in lowercase.

The arms on the walker can be moved up and down by pressing the arrow keys on the "Choose it out" screen.

On the hints screen (found by clicking and holding the "G" on the TROGDOR title screen), entering the Konami Code on the keyboard (up up down down left right left right B A, and then clicking the word "START") will start the player off with 30 lives.

During the game, pressing the K key will kick the game. This doesn't seem to give the player any advantage, but it does cause the machine to repeat the word "TROGDOR!" (A reference to Arcade Game.)

Um, but so, uh, because people are, they just start poking around, they, like, you know, decompile our Flash files and look at stuff, and so we've started adding a few things here and there for the, the, the nerds that do that stuff. And so there's one where these two Homestars appear, uh, like, it appears that there's two Homestars, like, you can barely see the edge of his feet on that side of the frame, like, that's in the actual cartoon, but then, so then to make it consistent with, uh, in the universe, one of them has a mustache, but you only see it if you, like, decompile the Flash thing and be like, "Oh, that's Homestar with a mustache."

All Halloween Teasers — When a Halloween teaser is decompiled in an attempt to view the costumes (presuming that they are actually the normal models with brightness turned all the way down), there is a text mocking the viewer. In the '09 teaser, there were also rejected costumes.